Can you please help me with this I’m in Science living environment I’ll give brainliest

Which is required for sexual fissiondiploid cell productionmeiosis

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.